Ernst & Young reveals data breach following hack on support system

Date:
Mon, 20 Jul 2026 11:20:00 +0000

Description:
Someone pulled sensitive customer data from EY's servers, but the data is yet to surface anywhere.

FULL STORY ======================================================================Copy link Facebook X Whatsapp Reddit Pinterest Flipboard Threads Email Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter Ernst & Young confirms breach via a thirdparty IT service management platform, exposing client tax data between March 28 and April 12, 2026 Attackers accessed documents tied to tax support tickets; exact scope and affected clients remain undisclosed, with no dark web leaks or group claims so far EY activated incident response, secured systems, and is offering 24 months of Experian identity monitoring to
impacted customers Ernst & Young (EY) has confirmed suffering a cyberattack
in which it lost sensitive customer information, including tax data.

In a data breach notification letter sent to affected individuals, the firm said that on April 23, 2026, it spotted anomalous activity within a third-party platform its IT team uses. This is an IT service management platform that helps EY staff support the teams that perform tax-related work for clients. Therefore, the tickets submitted through this platform sometimes also contain documents with client tax information which may have been
exposed in the incident. EY then activated its incident response protocols, bringing in third-party cybersecurity experts, as well as notifying relevant authorities and affected clients. Latest Videos From Watch full video here: Free identity theft protection Further investigation determined that the unnamed threat actors broke in on March 28, 2026 and have, until April 12, been exfiltrating the files. EY did not say exactly which information was pulled, or how many clients were affected. We also dont know if this only pertains to US clients, or overseas ones, as well. The attackers have, since then, been removed from EYs virtual premises, and the systems have been secured, the company confirmed.

So far, no hacking groups claimed responsibility for this attack, and the
data is yet to surface anywhere on the dark web. EYs customers should be on the lookout for unsolicited emails, especially those claiming to be from the professional services giant. You may like 2.6 million DentaQuest accounts exposed by data breach ShinyHunters claim 234GB of data stolen Accenture confirms breach after hacker steals 35GB of source code and other data French government agency admits data breach as hacker alleges up to 19 million sensitive records stolen breach may have exposed 'data from individual and professional accounts'

To help them stay secure, EY is offering 24 months of free identity
monitoring and restoration services through Experian.

Ernst & Young is one of the "Big Four" largest professional services and accounting networks in the world. It is headquartered in London, but operates as a global network of independent members spanning more than 150 countries and employing more than 400,000 people. The companys core business includes assurance, tax, consulting, and M&A strategy. Are you a pro? Subscribe to our newsletter Sign up to the TechRadar Pro newsletter to get all the top news, opinion, features and guidance your business needs to succeed! Contact me
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